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Summary of Business and Significant Accounting Policies (Details)	Sep. 30, 2025 insurance_carrier
Accounting Policies [Abstract]
Number of health insurance carriers (more than)	180

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- Definition

Number Of Health Insurance Carriers

+ References

No definition available.

+ Details

Name:	ehth_NumberOfHealthInsuranceCarriers
Namespace Prefix:	ehth_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

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- References

No definition available.

+ Details

Name:	us-gaap_AccountingPoliciesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration